John McCain's life and career

John McCain discusses the fiscal cliff negotiations with the media on Dec. 28, 2012.

(Photo: Reuters)

Then-Secretary of State Hillary Clinton talks with Senator John McCain during Sen. John Kerry's confirmation hearing to succeed Clinton, before the Senate Foreign Relations Committee on Capitol Hill, Jan. 24.

(Photo: Reuters)

Egyptian President Mohamed Mursi (right) talks with Senator John McCain during their meeting in Cairo, Jan. 16.

(Photo: Reuters)

John McCain addresses delegates during the third session of the Republican National Convention in Tampa, Florida, Aug. 29, 2012.

(Photo: Reuters)

Former Massachusetts governor Mitt Romney sits with John McCain at an event with war veterans in Hilton Head, South Carolina, Jan. 13, 2012.

(Photo: Reuters)

Myanmar pro-democracy leader Aung San Suu Kyi (right) meets with John McCain at her home in Yangon, June 2, 2011. McCain was in Myanmar for a two-day visit.

(Photo: Reuters)

John McCain (center) addresses witnesses during the Senate Armed Services committee hearing on the repeal of section 654 of title 10, United States Code, "Policy Concerning Homosexuality in the Armed Forces" on Capitol Hill, Dec, 3, 2010.

(Photo: Reuters)

John McCain is joined by his wife, Cindy, as he speaks during a campaign stop at his headquarters in Phoenix, Arizona, Aug. 23, 2010. McCain won his bid for a fifth term in the Senate.

(Photo: Reuters)

House Majority Leader Rep. Steny Hoyer (from left) speaks with Senator John McCain, Senate Minority Leader Mitch McConnell and House Minority Leader John Boehner after a meeting between congressional leadership and President Barack Obama on Afghanistan and Pakistan in Washington, Oct, 6, 2009.

(Photo: Reuters)

John McCain and President Barack Obama talk during a meeting about immigration reform at the White House, June 25, 2009.

(Photo: Reuters)

John McCain speaks in front of a sculpture, which depicts his capture after his jet was shot down in 1967 during the Vietnam War, by the Truc Bach Lake in Hanoi, April 7, 2009.

(Photo: Reuters)

Then-Republican presidential nominee Senator John McCain delivers a concession speech in Phoenix after losing the race to Barack Obama on Nov. 4, 2008. His wife, Cindy (right), vice presidential nominee Sarah Palin and her husband, Todd, all appear on stage with him.

(Photo: Reuters)

John McCain speaks at a campaign rally in Tampa, Florida, Nov. 3, 2008. Senator McCain made campaign appearances in seven states on the final day before the election.

John McCain and his wife, Cindy, arrive for the Kennedy Center Honors ceremony in Washington, Dec. 3, 2006.

(Photo: Reuters)

President George W. Bush's twin daughters Jenna (left) and Barbara (center) speak with John McCain as they sit inside the debate hall prior to the start of the first presidential debate at the University of Miami in Coral Gables, Florida, Sept. 30, 2004.

(Photo: Reuters)

Hillary Clinton and John McCain pose for photographers during their visit to Spitsbergen in Norway, Aug. 23, 2004.

John McCain formally declares his intention to run for the Republican presidential nomination with his wife, Cindy, at his side during a campaign kick-off rally in Nashua, N.H., Sept. 27, 1999.

(Photo: Reuters)

Caroline Kennedy Schlossberg presents the 1999 John F. Kennedy Profile in Courage Award to Senators John McCain (center) and Russell Feingold (right), May 24, 1999 at the JFK Presidential Library in Boston. McCain and Feingold were honored for their bipartisan efforts on campaign finance reform.

(Photo: Reuters)

Muhammad Ali (right) sits with Senator John McCain before testifying at the House Appropriations Committee, hoping to persuade the committee to increase the National Institute of Health's funding for Parkinson's disease research, April 23, 1997.

(Photo: Reuters)

Sen. John McCain holds up an article from the Washington Times on Capitol Hill, June 24, 1992, during a hearing of the Senate Select Committee on POW/MIA Affairs.

(Photo: AP Photo)

Sen. John McCain makes a point during his address to the Republican National Convention, Aug.16, 1988 in New Orleans.

Sen. John McCain (at podium), joined a group of GOP congressmen (left to right), Jim Kolbe, Jay Rhodes and Jon Kyl, in asking Gov. Evan Mecham to resign his office, Jan. 16, 1988, at the state capital in Phoenix.

(Photo: AP Photo)

Then-Rep. John McCain holds a photo of a marker in Hanoi at Truc Bach Lake where he parachuted after being shot down as a Navy pilot in the Vietnam War.

John McCain, a guest of the South Vietnamese government, visits an orphanage in Saigon, Vietnam, Oct. 30, 1974.

(Photo: AP Photo)

John McCain is greeted by President Richard Nixon (left) in Washington, Sept. 14, 1973.

(Photo: AP Photo)

Lt. Commander John McCain (right), a POW for over five years, waves to well wishers, March 18, 1973, after arriving at Jacksonville Naval Air Station in Florida. At left is his wife and son.

(Photo: AP Photo)

John McCain limps down a ramp for a welcome as he arrives at Clark Air Base in the Philippines, March 14, 1973, after being held prisoner in in Hanoi, Vietnam.

(Photo: AP Photo)

John McCain is administered to in a Hanoi, Vietnam hospital as a prisoner of war in the fall of 1967. McCain spent 20 years in the Navy, a quarter of it as a POW after his jet was shot down during a bombing mission, Oct. 26, 1967.

(Photo: AP Photo)

McCain Field, the U.S. Navy training base, was commissioned and named in honor of Admiral John S. McCain on July 14, 1961. Pictured at the ceremony (from left) are his grandson, Lt. John S. McCain III and his parents, Rear Admiral John S. McCain Jr. and Roberta Wright McCain.